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DMM Digital Multimeter HOW TO USE
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KNOB & TUBE WIRING
LIGHTING, EXTERIOR GUIDE
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LIGHTNING PROTECTION SYSTEMS
LOW VOLTAGE BUILDING WIRING
LOW VOLTAGE TRANSFORMER TEST
MAIN ELECTRICAL DISCONNECT
MAIN DISCONNECT AMPACITY
MOISTURE SOURCES in PANELS
MURRAY SIEMENS Recall
PHOTOVOLTAIC POWER SYSTEMS
PUSHMATIC - BULLDOG PANELS
REMOTE ELECTRIC POWER, PHOTOVOLTAIC
RUST in ELECTRICAL PANELS
SAFETY for ELECTRICAL INSPECTORS
SE CABLE SIZES vs AMPS
SIEMENS MURRAY Recall
THERMAL EXPANSION of HOT WATER
THERMAL EXPANSION of MATERIALS
UNDERGROUND SERVICE LATERALS
VOLTS / AMPS MEASUREMENT EQUIP
VOLTAGE MEASUREMENT METHODS
WIND ENERGY SYSTEMS
WIND TURBINES & LIGHTNING
ZINSCO SYLVANIA ELECTRICAL PANELS
Examples & photos of damaged lightning protection system components & suggestions for how to inspect lightning protection systems are outlined here. This article series describes common lightning protection systems, certification, installation, and lightning protection system inspection. We provide information about lightning strikes, lightning hazards, related equipment, sources of lightning protection system installers, and lightning strike risk assessment. Our page top photo is of the remains of a lightning protection system found on a Poughkeepsie NY home built ca 1935.
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We took these photographs of a damaged lightning protection system on an 1865 house in Orange County, New York. (Newburgh NY).
[Click to enlarge any image]
The air terminal and conductor were bent down away from the top of the home leaving the chimney and roof (a metal one in an area of frequent lightning strikes) unprotected.
This is an example of what can happen when someone who is not qualified works on the system.
The lightning protection system for this home was dangerously compromised when the maintenance crew simply bent components down out of their way.
[The photographs of details of an old lightning protection system shown here were NOT the work of any of the companies or sources described at this website.]
Example of an Improperly Abandoned Lightning Protection System
The two photographs just below show the remains of the grounding connections for a lightning arrestor system that was installed on a Poughkeepsie New York Home.
Leaving an incomplete lightning protection system on a building may actually be worse than having nothing at all, as especially combined with a masonry chimney (wet, conductive in a storm), a copper chimney cap, and a remaining lightning rod that is no longer connected to ground, this system may be saying to nature "go ahead, hit me!".
The arrow at upper left points to the lightning protection air terminal electrode, and the arrow at lower right in our photo points to the conductor cable that was cut off, perhaps by the roofers or by the house painters when they found that the lightning protection system wiring was "in the way".
We recommend removing rooftop electrodes and conductors that are no longer connected to ground, or if you believe that the original owner and installer felt that there was a reason for installing this system, it should be repaired by an expert.
Inspection tips for Lightning Protection Systems
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